Atomic Theory
Who is known as the father of modern atomic theory and believed atoms were indivisible?
A. J.J. Thomson
B. Ernest Rutherford
C. John Dalton
D. Niels Bohr
C. John Dalton
Which subatomic particle has a positive charge?
A. Electron
B. Neutron
C. Proton
D. Ion
C. Proton
What are the horizontal rows on the periodic table called?
A. Groups
B. Periods
C. Families
D. Series
B. Periods
What type of bond forms when electrons are transferred?
A. Covalent
B. Metallic
C. Hydrogen
D. Ionic
D. Ionic
A substance made of one type of atom is called a:
A. Compound
B. Mixture
C. Element
D. Molecule
C. Element
What tiny, dense center of the atom did Rutherford discover?
A. Electron cloud
B. Proton
C. Neutron
D. Nucleus
D. Nucleus
Which subatomic particle has no charge?
A. Proton
B. Electron
C. Neutron
D. Positron
C. Neutron
Elements in the same column are known as:
A. Periods
B. Rows
C. Groups
D. Blocks
C. Groups
What do atoms share in a covalent bond?
A. Protons
B. Neutrons
C. Electrons
D. Ions
C. Electrons
What rearranges during a chemical reaction?
A. Energy
B. Atoms
C. Protons
D. Charges
B. Atoms
Which atomic model shows electrons orbiting the nucleus like planets?
A. Plum pudding model
B. Bohr model
C. Quantum model
D. Solid sphere model
B. Bohr model
The atomic number equals the number of:
A. Neutrons
B. Electrons
C. Protons
D. Energy levels
C. Protons
Where are metals mostly located on the periodic table?
A. Right side
B. Center only
C. Left side
D. Bottom row
C. Left side
The bonds in water are:
A. Nonpolar
B. Ionic
C. Metallic
D. Polar
D. Polar
A physical change forms a new substance.
A. True
B. False
C. Sometimes
D. Only in gases
B. False
Dalton believed atoms of the same element could have different properties.
A. True
B. False
C. Only sometimes
D. Depends on charge
B. False
How many electrons does a neutral atom with 8 protons have?
A. 6
B. 8
C. 10
D. 16
B. 8
What happens to atomic radius as you go down a group?
A. Decreases
B. Stays the same
C. Increases
D. Becomes zero
C. Increases
What diagram shows bonding and lone pairs?
A. Molecular formula
B. Lewis structure
C. Periodic table
D. Energy diagram
B. Lewis structure
The starting materials in a reaction are called:
A. Products
B. Catalysts
C. Reactants
D. Solvents
C. Reactants
Which scientist discovered the electron?
A. Dalton
B. Bohr
C. Rutherford
D. J.J. Thomson
D. J.J. Thomson
Atoms of the same element with different numbers of neutrons are called:
A. Ions
B. Molecules
C. Compounds
D. Isotopes
D. Isotopes
Which element is the most electronegative?
A. Oxygen
B. Fluorine
C. Nitrogen
D. Chlorine
B. Fluorine
Which intermolecular force is strongest?
A. London dispersion
B. Dipole-dipole
C. Hydrogen bonding
D. Ionic bonding
C. Hydrogen bonding
The electrons involved in bonding are called:
A. Core electrons
B. Valence electrons
C. Free electrons
D. Neutrons
B. Valence electrons